What is a seizure?

Neuron discharge. Seizures are of many types and result from incoordinated neuron discharges. They can be focal without loss of consciousness or more severe with loss of consciousness as well as uncontrolled motor movements.
Brain hyperactivity. A seizure is an event that occurs when brain cells or neurons become overly active. Another way of describing this is that there is a "short" or inappropriate surge in the electrical activity of the brain.

Related Questions

What cause a seizures?

Many reasons. Any type of brain problem may result in a abnormal area which becomes a nidus for seizure activity. Causes include head injury, brain infections, brain tumors, toxins or poisons, usage or discontinuation or alcohol or recreational drugs, medication reactions, problems with blood sugar or other chemicals, etc. Read more...
Seizure causes. There are around 200, 000 new seizures and epilepsy cases each year, and a cause is only identified in about 30% of those cases. The most common causes include stroke, brain tumors, head injuries, genetic conditions, infections, abnormal sodium or blood sugar levels, etc. Certain factors known to provoke seizures include missing medication doses, alcohol/drugs, sleep deprivation and stress. Read more...

What causes a seizure?

Multiple causes. Abnormalities within the brain including developmental, stroke, infectious, mass lesions, and traumatic lesions. More difficult to understand are the causes that you can't see, immunologic and biochemical abnormalities in systems that have either localized or widespread alterations within the body. Then there seizures related to rapidly rising fever in a "sensitized" brain, may never re-appear. Read more...
Many. Most of the time it is unknown. There is along list for causes. Let your doctor decide. Read more...

What are silent seizures?

No clinical seizure. Pt. Does not show clinical seizure but neurophysiological testing like eeg will show seizure discharges. Read more...
No clinical seizure. Pt. Does not show clinical seizure but neurophysiological testing like eeg will show seizure discharges. Read more...

What are atonic seizures?

Loss of tone. Some complex epileptic have drop attacks=fall to the floor because of loss of muscle tone in legs usually have other seizures like tonic= totally stiff or starring spells in same child--or myoclonic seizures like simple jerks of trunk or limb. Read more...
Loss of tone. Most seizures involve a tonic phase and clonic phase. This is just the reaction of muscles that stiffen and then jerk. In some seizures the muscle lose tone, and the patient falls abruptly unable to move. These may also be called drop attacks. These may occur if with the patient fully aware and unable to control the event, but are usually associated with loss of consciousness. Read more...

What are partial seizures?

Only part of brain. At least at onset these seizures affect only part of the brain. Typically one remains awake - unless generalized to the other hemisphere or occasionally with complex partial seizures. Often confused with panic disorder, migraine headaches, dissociation, amnesia, schizophrenia, bipolar affective disorder, and medication/elicit drug reactions. Read more...
Have a focus. The terminology has been established for many decades and throughout the world. Seizures are generalized if they start in a diffuse manner all over the brain. Seizures are partial if they start from a defined focus. Partial seizures are simple if they do not alter consciousness or awareness. They are complex if there is alteration in awareness. They can secondarily generalize. Read more...
Start somewhere 1st. Epileptic seizures that start on one side of the brain. Represents excessive abnormal electrical activity. May take different forms depending upon what part of brain is affected. The temporal lobe is the most common area of origin. Seizures may remain localized or may spread throughout the brain. Read more...

What can cause seizures at 16?

Possible causes. Many things can cause a seizure for a 16 year old (alcohol, prescription medicine, head injury) but the most common is a condition called juvenile myoclonic epilepsy. A neurology evaluation and an EEG test are very helpful for determining this. Good luck! Read more...

What cause childhood seizures?

Electric. While all epileptic seizures are caused by electrical disturbances in the brain, there are many different kinds of seizures. See http://www.Epilepsyfoundation.Org/livingwithepilepsy/parentsandcaregivers/parents/typesofseizures.Cfm for more information. Read more...

What are all seizure disorders?

Abnormal brain acts. The brain is a complex electronic device. At times this electronic background goes into an electric storm. This produces a clinical event that can be considered as a seizure. There are many forms of seizures. It is fascinating to catch the event with video and eeg recording during the event. A knowledgeable and appropriate specialist can then decide why they occur and what should be done. Read more...
Epilepsy Syndromes. Many epileptologists (neurologists who specialist in epilepsy) are working to change our language from "seizure disorder" to epilepsy so that patients and others loose fear of the word epilepsy and can find good information at places like www.epilepsy.com - there are likely as many forms of epilepsy as forms of cancer. To treat well, ask a doctor to help find the reason if having seizures. Read more...